How Do I Insert From One Table To Another Without Any Duplicate ?

Question

3.86/5 (3 votes)

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tabel1

SQL

name   date       amount  phoneno   addresss chequeno bank 
   abc      10/09/2014 100000  145278    ncbdh    h2634    BSH
   bcjd     09/05/2014 52222   9822014   nhdhdd   A103    ING


table2 
name      date        amount     phoneno    address   chequeno    bank  remark    statement 
 bcjd     09/05/2014  52222      9822014    nhdhdd    A103        ING   cleared   payment done

this row is not available in table2
so this row should insert :

SQL

abc    10/09/2014 100000  145278    ncbdh    h2634    BSH

which is not available in table2

if it is already available then no change for that .
otherwise insert .

Posted 19-Sep-14 0:46am

10923679

Updated 19-Sep-14 1:01am

Magic Wonder

v2

Add a Solution

5 solutions

Solution 1

Hello ,
I don't know your table structure .
but according to your requirement you can try this code

insert into table2
select * from table1 where  table1.name not in (select name from table2)

here i insert data in table2 from table1 on the basis of name . It is better if there is any unique or primary key like Id(Auto int)

hope it helps you.

thanks

Posted 19-Sep-14 0:55am

Animesh Datta

Updated 19-Sep-14 0:59am

v2

Comments

10923679 19-Sep-14 7:00am

well that is the problem... i dont have anything unique here...

thats why i need to compare the whole row..

or i have compare like

name =name
date = date
phone=phone

if same then no update
otherwise insert ...

Solution 5

Hi,

You may use MERGE statemet for better performance. Here is sample script according to your example:

SQL

MERGE INTO Table2 AS TARGET
USING (
            SELECT Name, date, amount, chequeno
            FROM  Table1
) AS SOURCE
ON TARGET.Name = SOURCE.Name

WHEN MATCHED
    THEN UPDATE SET TARGET.date  = SOURCE.date ,
    TARGET.amount   = SOURCE.amount  ,
    TARGET.chequeno   = SOURCE.chequeno

WHEN NOT MATCHED BY TARGET THEN
INSERT (Name, date, amount, chequeno ) VALUES (SOURCE.Name, SOURCE.date, SOURCE.amount, SOURCE.chequeno)
;

Thanks,
Baliram Suryawanshi

Posted 19-Sep-14 2:53am

Baliram Suryawanshi

Solution 6

SQL

DECLARE 

@IDate DATETIME,
@Count	INT;


SELECT @Count=0;
SELECT @Count=count(*) FROM table2
IF @Count>0
BEGIN

SELECT TOP 1 @IDate=date FROM table2 ORDER BY table2.date DESC
	insert into table2
	select * from table1
	WHERE date>@IDate
END
ELSE IF @Count=0
BEGIN 
	INSERT INTO table2 
	select * from table1
END

Posted 19-Sep-14 20:05pm

Member 10911231

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Magic Wonder · Accepted Answer · 2014-09-19T01:06:00

Solution 2

Hi,

Check this...

SQL

insert into table2 t2
select * from table1 t1 
where t2.name <> t1.name 
and t2.date <> t1.date
and t2.amount <> t1.amount
and t2.chequeno <> t1.chequeno

above i am considering less possible columns which may provide uniqueness of record.

Hope this will help you.

Cheers.

Posted 19-Sep-14 1:06am

Magic Wonder

Comments

10923679 19-Sep-14 7:08am

okay if i want to insert selecting the columns then ???
i mean only few entry like

name amount date and cheque to table2

then?

Magic Wonder 19-Sep-14 7:33am

Specify those columns names in insert into & Select statements.

10923679 19-Sep-14 7:38am

thank you

Magic Wonder 19-Sep-14 7:39am

Your welcome.

_Asif_ · Accepted Answer · 2014-09-19T01:30:00

Solution 4

Try this

SQL

INSERT INTO Table2
SELECT *
FROM  Table1 T1
      LEFT OUTER JOIN Table1 T2 ON T1.NAME = T2.NAME
WHERE T2.Name is null

Posted 19-Sep-14 1:30am

_Asif_

Comments

10923679 19-Sep-14 7:40am

thank you